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RSpec FAQs

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What is RSpec?

RSpec is the peak reflectance measured over a very narrow angular band in the specular direction (+/-) 0.0991ยบ.

RSpec is very sensitive to any texture that is present on a surface. This texture or waviness acts as a concave or convex reflector that deflects light around the specular angle. When RSpec is equal to the gloss value the surface is smooth, as texture increases the RSpec value decreases.

The diagram above shows the same coating applied to two panels, the first has orange peel/waviness present due to the incorrect application setting on the spray gun.

Rhopoint glossmeter comparison table

Rhopoint Products 20ยบ Gloss 45ยบ Gloss 60ยบ Gloss 85ยบ Gloss Haze (Reflectance) Orange Peel RSpec Flat surface Curved surface Surfaces with curvature
Novo-Gloss 60 Glossmeter     โœ“         โœ“    
Novo-Gloss Trio 20/60/85 Glossmeter โœ“   โœ“ โœ“       โœ“    
Novo-Gloss 20/60/85 Glossmeter with Haze to ASTM E430 โœ“   โœ“ โœ“ โœ“     โœ“    
Rhopoint IQ 20/60 Gloss Haze DOI Meter โœ“   โœ“   โœ“ โœ“ โœ“ โœ“   โœ“
Rhopoint IQ 20/60/85 Gloss Haze DOI Meter โœ“   โœ“ โœ“ โœ“ โœ“ โœ“ โœ“   โœ“
New Rhopoint TAMS   โœ“ โœ“   โœ“
Optimap3   โœ“ โœ“   โœ“
Concrete Clarity Meter (CCM) โœ“   โœ“   โœ“ โœ“ โœ“ โœ“    
Novo-Curve Glossmeter     โœ“         โœ“ โœ“ โœ“
Novo-Gloss Flex 60 Glossmeter     โœ“         โœ“ โœ“ โœ“
Novo-Gloss 45 Glossmeter   โœ“           โœ“    

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FAQ Category: RSpec